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Finding the Fourth Proportional to 403,878.20, 605,817.30 and 364,512.20

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Solution

The fourth proportional to 403,878.20, 605,817.30 and 364,512.20 is: 546,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,878.20 : 605,817.30 = 364,512.20 : x
  2. Step 2: Convert to fraction form
    403,878.20/605,817.30 = 364,512.20/x
  3. Step 3: Cross multiply
    403,878.20x = 605,817.30 × 364,512.20
  4. Step 4: Simplify right side
    403,878.20x = 220,827,796,821.06
  5. Step 5: Solve for x
    x = 220,827,796,821.06/403,878.20
  6. Step 6: Final answer
    x = 546,768.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.